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Code Issues Releases Wiki Activity

Add support for more elliptic curves and start implementing KeyInfo class

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This commit is contained in:
Paul Schaub 2021-02-11 16:58:00 +01:00
parent ebf46fa05e
commit 79b2d42f9c
Signed by: vanitasvitae
GPG key ID: 62BEE9264BF17311
3 changed files with 144 additions and 3 deletions
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16
pgpainless-core/src/main/java/org/pgpainless/key/generation/type/ecc/EllipticCurve.java
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@ -17,10 +17,20 @@ package org.pgpainless.key.generation.type.ecc;
import javax.annotation.Nonnull;
/**
* Elliptic curves for use with
* {@link org.pgpainless.key.generation.type.ecc.ecdh.ECDH}/{@link org.pgpainless.key.generation.type.ecc.ecdsa.ECDSA}.
* For curve25519 related curve definitions see
* {@link org.pgpainless.key.generation.type.xdh.XDHCurve} and {@link org.pgpainless.key.generation.type.eddsa.EdDSACurve}.
*/
public enum EllipticCurve {
_P256("P-256"),
_P384("P-384"),
_P521("P-521"),
_P256("prime256v1"), // prime256v1 is equivalent to P-256, see https://tools.ietf.org/search/rfc4492#page-32
_P384("secp384r1"), // secp384r1 is equivalent to P-384, see https://tools.ietf.org/search/rfc4492#page-32
_P521("secp521r1"), // secp521r1 is equivalent to P-521, see https://tools.ietf.org/search/rfc4492#page-32
_SECP256K1("secp256k1"),
_BRAINPOOLP256R1("brainpoolP256r1"),
_BRAINPOOLP384R1("brainpoolP384r1"),
_BRAINPOOLP512R1("brainpoolP512r1")
;
private final String name;

67
pgpainless-core/src/main/java/org/pgpainless/key/info/KeyInfo.java Normal file
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@ -0,0 +1,67 @@
/*
* Copyright 2021 Paul Schaub.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.pgpainless.key.info;
import org.bouncycastle.bcpg.ECDHPublicBCPGKey;
import org.bouncycastle.bcpg.ECDSAPublicBCPGKey;
import org.bouncycastle.bcpg.ECPublicBCPGKey;
import org.bouncycastle.bcpg.EdDSAPublicBCPGKey;
import org.bouncycastle.jcajce.provider.asymmetric.util.ECUtil;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKey;
import org.pgpainless.algorithm.PublicKeyAlgorithm;
public class KeyInfo {
private final PGPSecretKey secretKey;
private final PGPPublicKey publicKey;
public KeyInfo(PGPSecretKey secretKey) {
this.secretKey = secretKey;
this.publicKey = secretKey.getPublicKey();
}
public KeyInfo(PGPPublicKey publicKey) {
this.publicKey = publicKey;
this.secretKey = null;
}
public static String getCurveName(PGPPublicKey publicKey) {
PublicKeyAlgorithm algorithm = PublicKeyAlgorithm.fromId(publicKey.getAlgorithm());
ECPublicBCPGKey key;
switch (algorithm) {
case ECDSA: {
key = (ECDSAPublicBCPGKey) publicKey.getPublicKeyPacket().getKey();
break;
}
case ECDH: {
key = (ECDHPublicBCPGKey) publicKey.getPublicKeyPacket().getKey();
break;
}
case EDDSA: {
key = (EdDSAPublicBCPGKey) publicKey.getPublicKeyPacket().getKey();
break;
}
default:
throw new IllegalArgumentException("Not a EC public key (" + algorithm + ")");
}
return getCurveName(key);
}
public static String getCurveName(ECPublicBCPGKey key) {
return ECUtil.getCurveName(key.getCurveOID());
}
}

64
pgpainless-core/src/test/java/org/pgpainless/key/generation/BrainpoolKeyGeneration.java Normal file
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@ -0,0 +1,64 @@
/*
* Copyright 2021 Paul Schaub.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.pgpainless.key.generation;
import static org.junit.jupiter.api.Assertions.assertEquals;
import java.io.IOException;
import java.security.InvalidAlgorithmParameterException;
import java.security.NoSuchAlgorithmException;
import org.bouncycastle.openpgp.PGPException;
import org.bouncycastle.openpgp.PGPPublicKey;
import org.bouncycastle.openpgp.PGPSecretKeyRing;
import org.junit.jupiter.api.Test;
import org.pgpainless.PGPainless;
import org.pgpainless.algorithm.KeyFlag;
import org.pgpainless.algorithm.PublicKeyAlgorithm;
import org.pgpainless.key.generation.type.KeyType;
import org.pgpainless.key.generation.type.ecc.EllipticCurve;
import org.pgpainless.key.info.KeyInfo;
public class BrainpoolKeyGeneration {
@Test
public void generateEcKeysTest() throws InvalidAlgorithmParameterException, NoSuchAlgorithmException, PGPException, IOException {
for (EllipticCurve curve : EllipticCurve.values()) {
PGPSecretKeyRing secretKeys = generateKey(
KeySpec.getBuilder(KeyType.ECDSA(curve))
.withKeyFlags(KeyFlag.CERTIFY_OTHER, KeyFlag.SIGN_DATA)
.withDefaultAlgorithms(),
KeySpec.getBuilder(KeyType.ECDH(curve))
.withKeyFlags(KeyFlag.ENCRYPT_COMMS, KeyFlag.ENCRYPT_STORAGE)
.withDefaultAlgorithms(),
"Elliptic Curve <elliptic@curve.key>");
assertEquals(PublicKeyAlgorithm.ECDSA, PublicKeyAlgorithm.fromId(secretKeys.getPublicKey().getAlgorithm()));
PGPPublicKey publicKey = secretKeys.getPublicKey();
assertEquals(curve.getName(), KeyInfo.getCurveName(publicKey));
}
}
public PGPSecretKeyRing generateKey(KeySpec primaryKey, KeySpec subKey, String userId) throws InvalidAlgorithmParameterException, NoSuchAlgorithmException, PGPException {
PGPSecretKeyRing secretKeys = PGPainless.generateKeyRing()
.withSubKey(subKey)
.withMasterKey(primaryKey)
.withPrimaryUserId(userId)
.withoutPassphrase()
.build();
return secretKeys;
}
}